STLED316SMTR datasheet(23/33 Pages) STMICROELECTRONICS

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STLED316S

Commands

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8.4

Display memory

The display memory stores the display data and sends to the LED when the display is on.

The address pointer, memory page and write signal indicates to this block the location to

write the data. This block will manage the address pointer. When the user writes a first byte,

the address increments by one if in auto-increment mode, else the address pointer remains

in the same location. The initial address is latched during the write/read command into the

address pointer. The display memory (7-segment/LED) is directly mapped into the display

segments. The user can access only one bank at a time in both the read and write modes.

The memory block is split into 4 pages.

Table 16.

Memory page address

7-segment display memory page 0x00:

Table 17.

7-segment display address

LED display memory page 0x01:

Table 18.

LED display address

Initial memory:

Default memory value is “00” in all locations.

During operation:

User defined value in these locations.

When the user wants to read the data from a particular location, the user sends the address

page through read command and chooses the mode of the address pointer (fixed or auto).

In this case, the user can access the whole memory area in that particular page (maximum

0 x 05).

Page 1

7 segment memory

Page 2

LED Display

Page 3

7 segment brightness

setting

Page 4

LED brightness setting

Addr 0x00 to 0x05

(40 bit)

Addr 0x00

(8 bit)

Addr 0x00 to 0x03

(32bit)

Addr 0x00 to 0x03

(32bit)

Address

Data

0x00

0x01

0x00

0x02

0x00

0x03

0x00

0x04

0x00

0x05

0x00

Address

Data

0x00h

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